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    Re: Graphic tables
    From: Greg Rudzinski
    Date: 2016 Aug 16, 13:41 -0700

    Michael,

    The 6 page Ageton Classic table also doubles as a log table for solving the Hav Doniol multiplication step.  Carrying a 5 page natural haversine table along with the 6 page Ageton Classic table gives the CN navigator 3 different ways to perform 1' precision sight reduction from the DR position. The 11 pages total fits easy into the nautical almanac and can be used as a daily page book mark.

    Greg Rudzinski

    From: Michael Bradley
    Date: 2016 Aug 15, 15:37 -0700

    Thankyou Andrew

    ... for the Graphical Logarithmic Tables references

    ... those who use the Haversine/Doniol sight reduction method could use a Log/Antilog graphical table to eliminate its single 'troublesome' multiplication step

    ... the only one of your references I could find on ABE Books was the Lacroix and Ragot / Macmillan, so I've ordered one copy

    ... the book will take a while to post itself to UK, so that's a project identified for later in the year...

    Thanks again

    Michael Bradley

       
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